Process of manufacturing waterproof adhesives



106. COMPOSITIONS,

COATING OR PLASTIC.

' Patented Maize, 1923.

UNITED STATES PATE T OFFICE.

SAMUEL BUTTERMAN, or CHICAGO, ILLINOIS, AND oHAELEs K. COOPERRIDER, or ALBUQUERQUE, NEW MExIco, DEDICATED, BY MESNE ASSIGNMENTS, To THE PEOPLE or THE UNITED sTATEs FOR THEIR EEEE UsE AND ENJOYMENT.

PROCESS OF MANUFACTURING WATERPROOF ADHESIVES.

1T0 Drawing. Application filed May 2, 1922. Serial No. 557,966.

(FILED UNDER THE ACT OF MARCH 3, 1883, 22 STAT. L., 625.)

To all whom it may concern: as cupric chloride in any amount from one Beltknown that we, SAMUEL BUT ERMAN, hunc rec o a part to one-tenth of a part a citizen of the United States. residing at for each part of caseln in the original casein Chicago. 1n the county of Cook and State glue can be used to advantage. TVe mention of Illinois, and CHARLES K. COOPERRIDER, a cupric chloride specifically; but do not wish citizen of the United States and an emto confine ourselves to cupric chloride only;

ployee of the United States Department of for we have found that any copper salt that Agriculture, residing at Albuquerque, in the has a coagulatin fi'ect on casein (r ue w1 county of Bernalillo and State ofiNew Mexact similarly to copper chloride and increase ico, have invented jointly a new and useful the water-resisting qualities of the glue; and Improvement in the Process of Manufacturthe chloride was mentioned by way of illusing Waterproof Adhesives, of which the foltration only. The coagulating effect of coplowing is a specification. per salts resides, of course, in their double This application is made under the act of charged copper cation. Therefore, any solu- March 3, 1883, chapter 143 (22 Stat, 625), ble copper salt that has a double charged and the invention herein described and copper cation will have acoagulating effect claimed may be used by the Government of on casein glue and increase its water-resistthe United States, its oflicers and employees, ance accordingly. That this is so is proved and by any person in the United States by the fact that we have used cu ric sulfate either in public or private work without payand cu rie nit-rate etc. with su stan 1a y e ment to us of any royalty thereon. We heresame resu t S T TS ETIPIlC chloride. by dedicate the same to the free use of the Our glue is made by mixing one (1) part Government and the people of the United by weight of casein two (2) parts of water, States. fifteen thousandths (.015) parts of a By- Our invention relates to the manufacture dro-carbon oil, two tenths (.2) part of waters a er in e mixed with one (1) part of 311a,-

of waterproof adhesives which remain for relatively long periods without setting, ter. and seventy hundredths (.70) part of that is, remain in a workable condition. TVe s ili cate of soda; to which, when mixed, is have now found a way of making certain actec tiree undredths (.03) part of c improvements in the process disclosed in BT10 chloride dissolved 1n three tenths /Patent No. 1 291 396 ranted to Samuel But- 0 a par 0 water.

111118 depending on the purity of "ciiprio'chloi'icle to every part of N added to the Inc prepared according to the added to the finished casein glue. They can terman which consis t s of the employment by In carrying??? our invention we dissolve weight of approximately one (1) part cain asmall amountof water three-hundredths s ng, 1.5 to 2.8 parts water, .015 parts hvc roof a part of ggpr m g h lgr d e to each part of carbon oil, .15 par powdered h drated casein in the original casein glue. For this t e' lime, purpose we use about 30 parts of water. The a esser per cent being required when pure cupric chloride solution is then poured into lime is used and a greater per cent when the casein glue which has been prepared as the lime is of inferior uality, mixed in .9 described in the Butterman patent. The onparts water and .7 par s silicate of soda. pric chloride solution may be added all at This process yields a glue which is very waonce or very slowly in droplets. In either t ar-r istant, It has now been found possicase, however, the casein glue must be stirred. ble, however, to make this glue Still more constantly in order to break up and disperse water-resistant by adding to it a certhe lumps formed by coagulation where the tain amount of en rio chm. We have copper solution and casein glue meet. found that if three unc redths of a parrot We have found that coppgr; have a V casein are pronounced beneficial eiileet when they are ed in Patent No. 1,291,396, a be added to-the lue, however, at any stage process descri They can even be added considerable improvement in water resistin its preparati ance will be brought about; but we do not to the casein before'any" of the other inwish to limit ourselves to the amount stated, gredients of the glue; In fact it is some- Examiner i a l i T l times desirable to add the copper solution directly to the casein. as a thin lue which does not set or jell for 'ar'i'excptionally long time, can be prepared in this way.

5 )Vhile we specifically mention the casein glue disclosed in Buttermans Patent No. 1,291,396 in connection with the use of copper salts we do not wish to limit ourselves to the specific proportions given in the patent mentioned because we have found that copper salts will increase the water resistance of any glue made of casein. lime. sodium silicate and water. although it has been our observation that the beneficial effect of a copper salt is greatest in those glues that contain the lowest amounts of lime. One peculiar advantage resulting from the use of copper salts is the fact that the addition of an amount of cupric chloride sufficient to bring about a certain increase in water resistance will not make the glue set and jell as quickly as the addition of such an amount of calcium hydroxide as would produce the same increase in water resistance.

What we claim is:

1. A composition of matter comprising casein. lime, silicate of soda. cupric chloride and water.

2. A composition of matter comprising casein, lime. dry soluble silicate of soda, a

4. A composition of matter comprising by Weight approximately one (1) part of casein,

two (2) parts of water, fifteen thousandths (.015) parts of a hydrocarbon oil. two tenths of a part (.2) of water-slaked lime mixed with one part of water, seventy hundredths (.70) part of silicate of soda, three hundredths (.03) part of cupric chloride dissolved in three tenths of a part (.3) of Water.

5. A composition of matter comprising casein, lime, water, silicate of soda and a copper salt that has a coagulating effect on the glue and gives in aqueous solution a double charged copper cation.

6. The herein described method of preparing an adhesive by adding an aqueous solution of cupric chloride to a glue comprising one (1) part of casein. two (2) parts of water, fifteen thousandths (.015) part hydrocarbon oil, two tenths of a part (.2) of powdered water-slaked lime, mixed in one 1) part of water and seventy hundredths (.70) parts silicate of soda.

7. The herein described method of adding any copper salt that has a coagulating effect on the glue and gives in aqueous solution a double charged copper cation to a glue comprising one (1) part of casein, two (2) parts of water, fifteen thousandths (.015) part hydrocarbon oil, two tenths of a part (.2) of powdered water-slaked lime mixed in one (1) part of water, and seventy hundredths (.70) parts silicate of soda.

In testimony whereof we have hereunto aflixed our signatures.

SAMUEL BUTTERMAN. CHARLES K. COOPERRIDER. 

